Step 2 of 3: Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places. Step 3 of 3: Construct the 99% confidence interval. Round your answers to the nearest whole number.

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Step 2 of 3: Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.

Step 3 of 3: Construct the 99% confidence interval. Round your answers to the nearest whole number.

Given two independent random samples with the following results:
n₂ = 6
n₁ = 13
x₁ = 180
$₁= 20
x₂ = 197
$₂ = 11
Use this data to find the 90% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the
two populations are normally distributed.
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Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval.
Transcribed Image Text:Given two independent random samples with the following results: n₂ = 6 n₁ = 13 x₁ = 180 $₁= 20 x₂ = 197 $₂ = 11 Use this data to find the 90% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Copy Data Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval.
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